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Diffstat (limited to 'lib/asio/associated_executor.hpp')
-rw-r--r-- | lib/asio/associated_executor.hpp | 149 |
1 files changed, 0 insertions, 149 deletions
diff --git a/lib/asio/associated_executor.hpp b/lib/asio/associated_executor.hpp deleted file mode 100644 index 4c5c207..0000000 --- a/lib/asio/associated_executor.hpp +++ /dev/null @@ -1,149 +0,0 @@ -// -// associated_executor.hpp -// ~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) -// -// Distributed under the Boost Software License, Version 1.0. (See accompanying -// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -// - -#ifndef ASIO_ASSOCIATED_EXECUTOR_HPP -#define ASIO_ASSOCIATED_EXECUTOR_HPP - -#if defined(_MSC_VER) && (_MSC_VER >= 1200) -# pragma once -#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) - -#include "asio/detail/config.hpp" -#include "asio/detail/type_traits.hpp" -#include "asio/is_executor.hpp" -#include "asio/system_executor.hpp" - -#include "asio/detail/push_options.hpp" - -namespace asio { -namespace detail { - -template <typename> -struct associated_executor_check -{ - typedef void type; -}; - -template <typename T, typename E, typename = void> -struct associated_executor_impl -{ - typedef E type; - - static type get(const T&, const E& e) ASIO_NOEXCEPT - { - return e; - } -}; - -template <typename T, typename E> -struct associated_executor_impl<T, E, - typename associated_executor_check<typename T::executor_type>::type> -{ - typedef typename T::executor_type type; - - static type get(const T& t, const E&) ASIO_NOEXCEPT - { - return t.get_executor(); - } -}; - -} // namespace detail - -/// Traits type used to obtain the executor associated with an object. -/** - * A program may specialise this traits type if the @c T template parameter in - * the specialisation is a user-defined type. The template parameter @c - * Executor shall be a type meeting the Executor requirements. - * - * Specialisations shall meet the following requirements, where @c t is a const - * reference to an object of type @c T, and @c e is an object of type @c - * Executor. - * - * @li Provide a nested typedef @c type that identifies a type meeting the - * Executor requirements. - * - * @li Provide a noexcept static member function named @c get, callable as @c - * get(t) and with return type @c type. - * - * @li Provide a noexcept static member function named @c get, callable as @c - * get(t,e) and with return type @c type. - */ -template <typename T, typename Executor = system_executor> -struct associated_executor -{ - /// If @c T has a nested type @c executor_type, <tt>T::executor_type</tt>. - /// Otherwise @c Executor. -#if defined(GENERATING_DOCUMENTATION) - typedef see_below type; -#else // defined(GENERATING_DOCUMENTATION) - typedef typename detail::associated_executor_impl<T, Executor>::type type; -#endif // defined(GENERATING_DOCUMENTATION) - - /// If @c T has a nested type @c executor_type, returns - /// <tt>t.get_executor()</tt>. Otherwise returns @c ex. - static type get(const T& t, - const Executor& ex = Executor()) ASIO_NOEXCEPT - { - return detail::associated_executor_impl<T, Executor>::get(t, ex); - } -}; - -/// Helper function to obtain an object's associated executor. -/** - * @returns <tt>associated_executor<T>::get(t)</tt> - */ -template <typename T> -inline typename associated_executor<T>::type -get_associated_executor(const T& t) ASIO_NOEXCEPT -{ - return associated_executor<T>::get(t); -} - -/// Helper function to obtain an object's associated executor. -/** - * @returns <tt>associated_executor<T, Executor>::get(t, ex)</tt> - */ -template <typename T, typename Executor> -inline typename associated_executor<T, Executor>::type -get_associated_executor(const T& t, const Executor& ex, - typename enable_if<is_executor< - Executor>::value>::type* = 0) ASIO_NOEXCEPT -{ - return associated_executor<T, Executor>::get(t, ex); -} - -/// Helper function to obtain an object's associated executor. -/** - * @returns <tt>associated_executor<T, typename - * ExecutionContext::executor_type>::get(t, ctx.get_executor())</tt> - */ -template <typename T, typename ExecutionContext> -inline typename associated_executor<T, - typename ExecutionContext::executor_type>::type -get_associated_executor(const T& t, ExecutionContext& ctx, - typename enable_if<is_convertible<ExecutionContext&, - execution_context&>::value>::type* = 0) ASIO_NOEXCEPT -{ - return associated_executor<T, - typename ExecutionContext::executor_type>::get(t, ctx.get_executor()); -} - -#if defined(ASIO_HAS_ALIAS_TEMPLATES) - -template <typename T, typename Executor = system_executor> -using associated_executor_t = typename associated_executor<T, Executor>::type; - -#endif // defined(ASIO_HAS_ALIAS_TEMPLATES) - -} // namespace asio - -#include "asio/detail/pop_options.hpp" - -#endif // ASIO_ASSOCIATED_EXECUTOR_HPP |